Alright, then the question you should be asking yourself is this:
"How am I better than these guys?"
Look through their threads, identify what makes each of them unique and think about how you can incorporate the spirit of their ideas into something you can call your own. Without even having to look at anything other than the titles I see servers offering RPG elements, server back-story, building themes and mock governments.
Everyone and anyone can make a server that's "free of griefing". Minecraft servers (and Tekkit servers, to a lesser extent) are a dime a dozen - any 11 year old with a decent computer and free time can set one up. Why is yours unique? Why should I join yours over the hundreds of others out there? It's simply not enough to offer the same platform as everyone else.
If you can't explain your angle, you probably haven't found it yet.